1 /* Copyright (c) 2010-2022. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include <simgrid/instr.h>
7 #include <simgrid/s4u.hpp>
9 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_trace_masterworker, "Messages specific for this example");
10 namespace sg4 = simgrid::s4u;
18 static void master(std::vector<std::string> args)
20 xbt_assert(args.size() > 4, "The master function expects at least 3 arguments");
22 long tasks_count = std::stol(args[1]);
23 double compute_cost = std::stod(args[2]);
24 long communication_cost = std::stol(args[3]);
25 size_t workers_count = args.size() - 4;
26 const auto& my_host = sg4::this_actor::get_host()->get_name();
27 auto mailbox = sg4::Mailbox::by_name("master_mailbox");
29 XBT_DEBUG("Got %zu workers and %ld tasks to process", workers_count, tasks_count);
31 // setting the variable "is_master" (previously declared) to value 1
32 simgrid::instr::set_host_variable(my_host, "is_master", 1);
34 simgrid::instr::mark("msmark", "start_send_tasks");
35 for (int i = 0; i < tasks_count; i++) {
36 // setting the variable "task_creation" to value i
37 simgrid::instr::set_host_variable(my_host, "task_creation", i);
39 // setting the category of task to "compute"
40 Task task = {"task", "compute", compute_cost};
41 mailbox->put(new Task(task), communication_cost);
43 simgrid::instr::mark("msmark", "finish_send_tasks");
45 XBT_DEBUG("All tasks have been dispatched. Request all workers to stop.");
46 for (unsigned int i = 0; i < workers_count; i++) {
47 Task finalize = {"finalize", "finalize", 0};
48 mailbox->put(new Task(finalize), 0);
52 static void worker(std::vector<std::string> args)
54 xbt_assert(args.size() == 1, "The worker expects no argument");
56 const auto& my_host = sg4::this_actor::get_host()->get_name();
57 auto mailbox = sg4::Mailbox::by_name("master_mailbox");
59 simgrid::instr::set_host_variable(my_host, "is_worker", 1);
60 simgrid::instr::set_host_variable(my_host, "task_computation", 0);
63 auto task = mailbox->get_unique<Task>();
64 if (task->name == "finalize") {
67 // adding the task's cost to the variable "task_computation"
68 simgrid::instr::add_host_variable(my_host, "task_computation", task->flops);
69 sg4::this_actor::exec_init(task->flops)->set_name(task->name)->set_tracing_category(task->category)->wait();
72 XBT_DEBUG("Exiting now.");
75 int main(int argc, char* argv[])
77 sg4::Engine e(&argc, argv);
78 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n", argv[0]);
80 e.load_platform(argv[1]);
82 // declaring user variables
83 simgrid::instr::declare_host_variable("is_worker");
84 simgrid::instr::declare_host_variable("is_master");
85 simgrid::instr::declare_host_variable("task_creation");
86 simgrid::instr::declare_host_variable("task_computation");
88 // declaring user markers and values
89 simgrid::instr::declare_mark("msmark");
90 simgrid::instr::declare_mark_value("msmark", "start_send_tasks");
91 simgrid::instr::declare_mark_value("msmark", "finish_send_tasks");
93 // declaring user categories with RGB colors (values from 0 to 1)
94 simgrid::instr::declare_tracing_category("compute", "1 0 0"); // compute is red
95 simgrid::instr::declare_tracing_category("finalize", "0 1 0"); // finalize is green
96 // categories without user-defined colors receive random colors generated by the tracing system
97 simgrid::instr::declare_tracing_category("request");
98 simgrid::instr::declare_tracing_category("report");
100 e.register_function("master", &master);
101 e.register_function("worker", &worker);
102 e.load_deployment(argv[2]);
106 XBT_DEBUG("Simulation is over");
108 if (const auto& categories = simgrid::instr::get_tracing_categories(); not categories.empty()) {
109 XBT_INFO("Declared tracing categories:");
110 for (const auto& category : categories)
111 XBT_INFO("%s", category.c_str());
114 if (const auto& marks = simgrid::instr::get_marks(); not marks.empty()) {
115 XBT_INFO("Declared marks:");
116 for (const auto& mark : marks)
117 XBT_INFO("%s", mark.c_str());